//
//  MainTabBar.swift
//  weibo-anpeng
//
//  Created by 安鹏 on 16/1/11.
//  Copyright © 2016年 安鹏. All rights reserved.
//

import UIKit

class MainTabBar: UITabBar {

    override init(frame: CGRect) {
        super.init(frame: frame)
        addSubview(plusBtn)
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        let w = self.bounds.width / 5
        let h = self.bounds.height
        let rect = CGRect(x: 0, y: 0, width: w, height: h)
        var index:CGFloat = 0
        
        for subView in subviews{
            if subView.isKindOfClass(NSClassFromString("UITabBarButton")!){
                subView.frame = CGRectOffset(rect, index * w, 0)
                
                index += (index == 1 ? 2 : 1)
            }
        }
        
        plusBtn.frame = CGRectOffset(rect, w * 2, 0)
    }
    
    lazy var plusBtn: UIButton = {
       let btn = UIButton()
        
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: .Highlighted)
        
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: .Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: .Highlighted)
        btn.sizeToFit()
        return btn
    }()

}
